Modules
Higher Education
Poliovirus
OverviewPoliovirus is a human retrovirus which is responsible for polio or poliomyelitis. It is mainly comprised of the RNA genome and protein capsid.Learning ObjectivesAfter...
Higher Education
Excretory System
OverviewThe excretory system consists of kidneys, ureter, urethra and urinary bladder. It helps the body in filtration and excretion of metabolic waste and unwanted...
Higher Education
Waves in Matter
OverviewWater waves and sound waves require matter or a medium to move from place to place. In context with matter, waves travel fastest in solids and slowest in...
Higher Education
Waves and Particles
OverviewAn electromagnetic wave can behave as a particle called a photon. A photon is a massless bundle of energy that behaves like a particle and a wave. The photon's...
Higher Education
Polarization of Light
OverviewPolarization of light is the phenomenon in which the vibrations of light are restricted in a direction perpendicular to the direction of the propagation...
Higher Education
Cardiac Cycle
OverviewThe cardiac cycle is the sequence of events that take place when the heart beats. A single cycle can be divided into two phases, systole and diastole. Learning...
Higher Education
Parts of Digestive System
OverviewThe digestive system is one of the major organ systems in our body. Its main parts are mouth, esophagus, stomach, liver, gallbladder, small intestine, large...
Higher Education
Synapse
OverviewA synapse is a structure that allows a neuron to pass a chemical signal to another neuron. A synapse constitutes the membranes of a presynaptic neuron and...
Higher Education
Ultrasound-SONAR
OverviewSONAR (SOund NAvigation Ranging) is a device which is used to detect and locate underwater objects by using ultrasonic waves. It consists of a transmitter...
Higher Education
Action Potential
OverviewAn action potential is the difference in electrical potential related to the movement of an impulse along the membrane of a muscle cell or a nerve cell....
Higher Education
Dispersion
OverviewDispersion refers to the splitting of white light into its constituent colors. When white light enters a prism, each color of light is bent by a different...
Higher Education
Laser
OverviewA ruby laser is a solid-state laser that uses the synthetic ruby crystal as its laser medium. It emits a narrow, intense beam of light in a single direction.Learning...
Higher Education
Meiosis I
OverviewMeiosis 1 is the first of the two consecutive divisions of the nucleus of the eukaryotic cell during meiosis, and is comprised of the following four stages:...
Higher Education
Structure of DNA
OverviewDNA is a macromolecule which carries genetic information from one generation to another generation. Its basic structural units are nucleotides. Each nucleotide...
Higher Education
Electric Generator
OverviewAn electric generator converts mechanical energy into electric energy. It consists of four parts: armature, permanent magnet, slip rings and brushes. When...
Higher Education
Regression and Correlation
OverviewRegression analysis involves identifying the relationship between a dependent variable and one or more independent variables. A model of this relationship...
Higher Education
Solving System of Equations by Matrix Method
Overview We are already familiar with the method of solving system of equations in two variables. But what if we have system of equations with three variables. In...
Higher Education
Waiting Time Distribution
OverviewTo explain the concept of waiting time distribution, we use lambda where Lambda is the number of events per unit time. A graph of exponential distribution,...
Higher Education
Normal Distribution
OverviewNormal (or Gaussian) distribution is a very common continuous probability distribution. Normal distributions are important in statistics and are often used...
Higher Education
Anatomy of Respiratory System
OverviewThe respiratory system includes nose, pharynx, larynx, trachea, and lungs. It provides oxygen to body tissues for cellular respiration and removes waste...